The major Barriers are infrastructure, structured data, lawlessness and knowledge gap, purchasing power.
Power cannot be overemphasized.
There is no clear data on the numbers, potentials and access to data. All what we have is inaccurate projections which makes it difficult to project. Companies that made plans and projections based on the sketchy data have bunt their fingers.
There are no laws and there is a wide gap between the authorities and the ecosystem and thus appropriate laws are still far from reality. This can be good as well as bad.
Many entrepreneurs in Africa have bare passion but lack knowledge. Therefore to augment, they simply copy and paste. This makes it difficult to have original African business with a global focus. That why you have people duplicating what is already in other nations.
There is this group thinking thing that everyone thinks in the same direct. One person has an idea, a model or innovation and everyone starts modifying it to create same business in a different way or model. Its all same thing.
Lastly, purchasing power makes even the African businesses to look for global markets. This is really challenging.